#include <iostream>

#include "MathFunctions.h"

// include the generated table
#include "Table.h"

namespace mathfunctions {
	namespace detail {
		// a hack square root calculation using simple operations
		double mysqrt(double x)
		{
		  if (x <= 0) {
			return 0;
		  }

		  // use the table to help find an initial value
		  double result = x;
		  if (x >= 1 && x < 10) {
			std::cout << "Use the table to help find an initial value " << std::endl;
			result = sqrtTable[static_cast<int>(x)];
		  }

		  // do ten iterations
		  for (int i = 0; i < 10; ++i) {
			if (result <= 0) {
			  result = 0.1;
			}
			double delta = x - (result * result);
			result = result + 0.5 * delta / result;
			std::cout << "Computing sqrt of " << x << " to be " << result << std::endl;
		  }

		  return result;
		}
	}
}
